Post-bourbon hangover affects pain not pace

A bartender prepares shots of vodka in a file photo. A recent study by a U.S. team of researchers at Brown University examined the morning-after effects on drinkers of bourbon and vodka — two of the United States' most popular spirits — and found that while bourbon drinkers definitely felt more hungover the next day, they performed just as well when completing tasks.

Photograph by: David Silverman
, Getty Images

Holiday revellers looking to party with bourbon instead of vodka this year may feel worse for it the morning after — but at least they won't be any slower.

A recent study by a U.S. team of researchers at Brown University examined the morning-after effects on drinkers of bourbon and vodka — two of the United States' most popular spirits — and found that while bourbon drinkers definitely felt more hungover the next day, they performed just as well when completing tasks.

"(We) wanted to know if performance impairments the morning after drinking were associated with how hungover the person felt," said lead author Damaris J. Rohsenow.

Bourbon has 37 times the amount of congeners — chemical constituents that give alcohol flavour but also cause disagreeable side-effects as the body reacts — than that of vodka.

As a general rule, darker liquors have more congeners than lighter ones.

The study enlisted 95 healthy, heavy drinkers between the ages of 21 and 35 to test the effects of the spirits over a three-night period.

Following an initial acclimatization night, the participants underwent two nights of drinking — they were given either of bourbon or vodka mixed with Coke one of the nights and a placebo the other. Over a 2 1/2-hour period, the participants were expected to reach a blood-alcohol level of 0.11 per cent.

Bourbon drinkers only noted a significant difference in their morning-after state — feelings of headache, nausea, thirst, fatigue and general lousiness.

"As congener content affects only how people feel the next day, the congeners in bourbon versus vodka do not appear to increase risk (of performance)," the study said.

Participants who didn't sleep well also reported more hangover symptoms, regardless of what had been drank.

The overall performance of the drinkers — measured through neurocognitive tests using accuracy and speed over a prolonged period — was two per cent weaker following alcohol consumption than it would have been had they opted to remain sober — a small margin, but one that Rohsenow said could make all the difference in tense situations.

"This effect probably would not make a difference in ability to drive on an empty street. However, ability to drive in rush-hour traffic, be an air traffic controller or operate dangerous machinery requiring vigilance and split-second decisions would be affected and this slowness could be enough to decrease safety," she said.

The results of the study will be published in the March edition of the journal Alcoholism: Clinical and Experimental Research.

More on This Story

Story Tools

A bartender prepares shots of vodka in a file photo. A recent study by a U.S. team of researchers at Brown University examined the morning-after effects on drinkers of bourbon and vodka — two of the United States' most popular spirits — and found that while bourbon drinkers definitely felt more hungover the next day, they performed just as well when completing tasks.

We encourage all readers to share their views on our articles and blog posts. We are committed to maintaining a lively but civil forum for discussion, so we ask you to avoid personal attacks, and please keep your comments relevant and respectful. If you encounter a comment that is abusive, click the "X" in the upper right corner of the comment box to report spam or abuse. We are using Facebook commenting. Visit our FAQ page for more information.

Almost Done!

Postmedia wants to improve your reading experience as well as share the best deals and promotions from our advertisers with you. The information below will be used to optimize the content and make ads across the network more relevant to you. You can always change the information you share with us by editing your profile.

By clicking "Create Account", I hearby grant permission to Postmedia to use my account information to create my account.

I also accept and agree to be bound by Postmedia's Terms and Conditions with respect to my use of the Site and I have read and understand Postmedia's Privacy Statement. I consent to the collection, use, maintenance, and disclosure of my information in accordance with the Postmedia's Privacy Policy.

Postmedia wants to improve your reading experience as well as share the best deals and promotions from our advertisers with you. The information below will be used to optimize the content and make ads across the network more relevant to you. You can always change the information you share with us by editing your profile.

By clicking "Create Account", I hearby grant permission to Postmedia to use my account information to create my account.

I also accept and agree to be bound by Postmedia's Terms and Conditions with respect to my use of the Site and I have read and understand Postmedia's Privacy Statement. I consent to the collection, use, maintenance, and disclosure of my information in accordance with the Postmedia's Privacy Policy.